JuiceSwap V3 Periphery

This repository contains the periphery smart contracts for JuiceSwap V3, a fork of Uniswap V3 Protocol. For the lower level core contracts, see the v3-core repository.

Overview

JuiceSwap V3 Periphery provides user-facing smart contracts for interacting with the JuiceSwap V3 Protocol, including:

• SwapRouter - Multi-hop swap execution with exact input/output amounts
• NonfungiblePositionManager - ERC721 NFT representation of liquidity positions
• V3Migrator - Migration from V2 to V3 positions
• Quoter - Off-chain quote calculations for swap pricing
• Oracle Library - TWAP oracle utilities

Key Modifications from Uniswap V3

• Updated POOL_INIT_CODE_HASH for JuiceSwap's modified pool contract (50% max protocol fee vs 25%)
• Rebranded NFT positions: JuiceSwap V3 Positions NFT-V1 with symbol JUICE-V3-POS
• Updated package name: @juiceswapxyz/v3-periphery

Local Deployment

Install the npm package @juiceswapxyz/v3-periphery and import bytecode from artifacts:

import {
  abi as SWAP_ROUTER_ABI,
  bytecode as SWAP_ROUTER_BYTECODE,
} from '@juiceswapxyz/v3-periphery/artifacts/contracts/SwapRouter.sol/SwapRouter.json'

// deploy the bytecode

Using Solidity Interfaces

Import JuiceSwap v3 periphery interfaces into your smart contracts:

import '@juiceswapxyz/v3-periphery/contracts/interfaces/ISwapRouter.sol';

contract MyContract {
  ISwapRouter router;

  function doSomethingWithSwapRouter() {
    // router.exactInput(...);
  }
}

Development

Compile Contracts

npm run compile

Run Tests

npm test

Verify Pool Init Code Hash

Before deployment, verify that POOL_INIT_CODE_HASH matches the compiled v3-core bytecode:

npm run verify-pool-hash

This step is critical - an incorrect hash will cause all pool operations to fail.

License

GPL-2.0-or-later